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Black 6 ft USB 2.0 Type A male to DB9 RS232 female null modem adapter cable

Rocstor

Rocstor Y10C700-B1 USB 2.0 to DB9 RS232 Null Modem Adapter 6 ft

SKU CH-ZS76-5PFSN MPN Y10C700-B1

Connects USB 2.0 ports to DB9 RS232 serial devices with a 6 ft null-modem cable

  • 6 ft cable reaches devices across a desk
  • USB 2.0 Type A plug connects to standard ports
  • DB-9 RS-232 female end fits serial equipment
  • Null modem wiring enables direct DCE-to-DCE links
  • FTDI chipset provides reliable driver support

USB 2.0 to DB9 Null Modem Adapter

The Rocstor Y10C700-B1 connects legacy serial equipment to modern USB ports. It is built for technicians and engineers who need a direct DCE link without a separate gender changer. The six-foot cable reaches bench instruments or rack-mounted gear from a laptop or desktop.

Thermals Noise and Power Draw

The adapter draws bus power from the USB 2.0 connection and runs without an external supply. No fan or active cooling is present so operation is completely silent. Power consumption stays within the standard USB 2.0 current limit during normal data transfer.

FTDI Chipset and Driver Support

An FTDI chip handles the USB-to-serial conversion and provides broad driver compatibility across Windows, macOS and Linux. This removes the need for proprietary drivers and ensures reliable enumeration on first plug-in. The null-modem wiring crosses transmit and receive lines for direct DCE-to-DTE communication.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 55% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Brand nameRocstor
Size & build
Shipping weight0.11 kg
Package size241 × 178 × 0 mm

Questions about this item

How do I install the USB 2.0 to DB9 null modem adapter on a laptop, and which step is often missed?

Plug the USB Type A end into the laptop, let the FTDI driver install automatically, then connect the DB-9 female end to the serial device; the step often missed is confirming the COM port number in Device Manager before configuring the application.

What maintenance or replacement will the adapter need over time?

The cable and connectors are passive; no scheduled maintenance is required, but if the USB plug or DB-9 pins become bent or corroded, replace the entire 6 ft adapter cable.

What limit appears first during sustained high-traffic serial sessions?

The USB 2.0 interface caps sustained throughput, so the bottleneck shows up as reduced effective baud rate when the serial traffic approaches the bulk-endpoint bandwidth limit.

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